CVE-2026-9772

Estado: AnalizadaAlta (8.8)—

Unraid Web Server FileUpload Command Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Unraid. Authentication is required to exploit this vulnerability.

The specific flaw exists within FileUpload.php. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of the www-data user. Was ZDI-CAN-30116.

CVSS

Versión: 3.0
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 8.8

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 1.89%
Percentil entre todas las CVEs puntuadas: 79
Fecha de la puntuación: 4/10/2026

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

ExplotaciónT1210 Exploitation of Remote Serviceslateral movement85 %
Impacto principalT1059 Command and Scripting Interpreterexecution90 %

Vulnerabilidad de inyección de comandos en servicio web remoto (CWE-78) que requiere autenticación (PR:L). Permite ejecución de código arbitrario en contexto www-data mediante manipulación de parámetro en FileUpload.php.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Privileged Account Management Disable or Remove Feature or Program Vulnerability Scanning Threat Intelligence Program Restrict Web-Based Content Network Segmentation

Tecnologías afectadas (1)

Unraid — Unraid

CWE

CWE-78

Referencias

https://www.zerodayinitiative.com/advisories/ZDI-26-385/

JSON original (NVD)

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